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  2. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    The card security code is not encoded on the magnetic stripe but is printed flat. American Express cards have a four-digit code printed on the front side of the card above the number. Diners Club, Discover, JCB, Mastercard, and Visa credit and debit cards have a three-digit card security code. The code is the final group of numbers printed on ...

  3. What Is a Credit Card Security Code and Why Is It ... - AOL

    www.aol.com/credit-card-security-code-why...

    The three- or four-digit code on credit and debit cards can be either a card security code or a card verification value. A three-digit CVV is located on the back of Mastercard®, VISA® and ...

  4. 3-D Secure - Wikipedia

    en.wikipedia.org/wiki/3-D_Secure

    3-D Secure. 3-D Secure is a protocol designed to be an additional security layer for online credit and debit card transactions. The name refers to the "three domains" which interact using the protocol: the merchant/acquirer domain, the issuer domain, and the interoperability domain. [1]

  5. How to find your credit card's security code - AOL

    www.aol.com/news/2010-06-24-how-to-find-your...

    Make any purchase these days where your credit card isn't physically swiped and you're sure to be asked for the security code that goes with your credit card. This small block of numbers, ranging ...

  6. Payment terminal - Wikipedia

    en.wikipedia.org/wiki/Payment_terminal

    PAX Technology S90 credit card terminal with a Visa card inserted.. A payment terminal, also known as a point of sale (POS) terminal, credit card machine, card reader, PIN pad, EFTPOS terminal (or by the older term as PDQ terminal which stands for "Process Data Quickly" [1]), is a device which interfaces with payment cards to make electronic funds transfers.

  7. Protecting your AOL Account

    help.aol.com/articles/protecting-your-aol-account

    Call live aol support at. 1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more.

  8. Mastercard - Wikipedia

    en.wikipedia.org/wiki/Mastercard

    Mastercard Inc. (stylized as MasterCard from 1979 to 2016, mastercard from 2016 to 2019) is an American multinational payment card services corporation headquartered in Purchase, New York. [ 3 ] It offers a range of payment transaction processing and other related-payment services (such as travel-related payments and bookings).

  9. What Is a Credit Card Security Code and Why Is It ... - AOL

    www.aol.com/finance/credit-card-security-code...

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